Kim Kardashian heads into the 'Late Show with David Letterman' at Ed Sullivan Theater on Jan. 16 in New York City. / James Devaney, WireImage

by Ann Oldenburg, USA TODAY

by Ann Oldenburg, USA TODAY

We all know that Kim Kardashian's divorce from NBA star Kris Humphries has been dragging on since she filed in October 2011. But it was still fresh in Khloe Kardashian Odom's mind in the season opener of E!'s Kourtney & Kim Take Miami on Sunday.

"Like, seriously, what a waste of your time," Khloe said to Kim. "I feel like it was a dream. I feel like it never really even happened."

Said Kim, "It's a really expensive dream that won't leave me alone. I'm annoyed about it, but I've taken it to a level where I'm like, I can't stress about this. The judge says we will be divorced in 2013."

Khloe, who was never that keen on Humphries, wouldn't let up. "If you wanted to marry someone just for press, wouldn't you have picked someone that was actually popular?"

Kim didn't get upset, though. "I don't know why you think I have to be so mad about this," she says to Khloe. "I have cried about this for months and months and months. At some point, I have to let it go."

Later, Khloe does a little more Humphries-bashing, saying, "If you ever come across someone who barks for most of his words, don't date him."

Fortunately for him, Kanye West seems to have Khloe's seal of approval. "He is so much better than Humphries."